Truck-frame for mine-cars



F. S. BARKS.

TRUCK FRAME FOR MINE CARS.

. APPLICATION FILED FEB. 4, 1921. F 1,389,928. PatentedSept. 6, 192L 3 SHEETS-SHEET 2.

F. S. BARKS.

TRUCK FRAME FOR MINE CARS.

APPLICATIONHLED FEB. 4. 1921.

Patented Sept. 6, 1921.

3 SHEETSSHEET 3.

STE'S FRANK S. BARES, 0F ST. LOUIS, MISSOURI,

ASSIGNOB TO LINCOLN STEEL AND FORGE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION 0F MISSOURI.

TRUCK-FRAME Fon Minn-cans.

To all whom t may concern.'

vBe it known that I, FRANK S. Banks, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Truck-F rames for Mine-Cars, of which the vfollowing is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to Ina-ke and use the same, reference being had to the accompanying drawings, forming part of this specification. My invention relates generally to mine cars and more particularly to the truck frame and journal boxes therefor, the principal objects of my invention being to generally improve upon and simplify the construction of mine car truck frames and journal boxes and to provide a relatively simple, strong and durable truck frame that can be easily and cheaply manufactured, readily applied to mine cars and which will serve as a firm and substantial support for the journal boxes in which the wheel carrying axles are journaled.

Further objects of my invention are, to provide a mine car truck frame with pockets that are adapted to receive and retain the journal boxes and the latter being constructed so that they are self-alning, thereby eliminating the time and labor ordinarily involved in setting the journal boxes in true positions.

A still further obj ect of my invention is to provide an improved form of journal box for mine car truck frames and to construct the same so that grease or liquid lubricant can be readily delivered into the chamber within the box.

With the foregoing and other objects in view, my invention consists in certain novel features of construction and arrangement of parts hereinafter more fully described and claimed and illustrated in the accompanying drawings, in Which Figure 1 is a top plan view of a mine car truck frame of my improved construction.

Fig. 2 is a section taken approximately on the line 2 2 of Fig. 1.

Fig.y 3 is an end view of the truck equipped with aI` frame of my improved construction.

Fig. 4 is an enlarged cross-section taken j approximately on the line 4-4 of Fig. 1.

Fig. 5 is a detail section taken approximately on the line 5 5 of Fig. 4.

Specication of Letters Patent. Application led February 4, 1921.

Patented sept. c, 192i. Serial N0. 442,402.

Fig. 6 is a horizontal section taken approximately on the line 6 6 of Fig. 5.

F ig. 7 is a partial/'plan view of a modified form. F ig. .8 is an end elevational view partly n segtion of the modified form shown iii Fig. 9 is a detail view, inside elevation, of the modified form shown in Figs. 7. and'8. Referring by numerals to the accompanying drawings which illustrate a practical embodiment of my invention, 10, l0 designate the side members of my improved truck frame, said members being preferably-.constructed fr om commercially rolled channels disposed with their flanges projecting downwardly and said beams near their ends being bent downwardly to form substantially U- shaped portions 11 p ockets for the journal boxes that are associated with the truck. The webs of these side members l0 are provided at suitable points with erforations 12 that are adapted to receive bo ts or like fastening devices that secure the truck frame to the underside of the car body and the transversely disposed frame members 13 that are preferably formed of commercially rolled channelsliave their end portions positioned within the upper portions of the .spaces within the bearings or pockets 11 and the depending flanges of said transverse frame members are secured to the upper portions of the U-shaped bearings or pockets 11 of the side members 10 in any suitable manner, preferably yby means of rivets 14. The end portions of the webs of the transverse members 13 are bent or pressed upwardly as designated by 15, such construction being employed in order to accommodate bearing lugs that are lformed lintegral with the tops of the journal oxes.

The bodies 16 of these journal. boxes are "substantially cylindrical in form and the annular surface 17 of the wall inclosing the main chamber in each box is smooth in order to form a bearing surface for antifriction members such as rollers 18 which surround the journal of the wheel carrying axle 19 and these antifriction members 18 are retained Within the journal box in any suitable'manner.

The body of each journal box is provided with an enlargement 20 so that when the that serve as bearings or,

ibs

portion 16 of each journal box is an upwardly projecting lug 21 having a rounded .upper surface which, when the box is properly positioned bears against the under.

ffsnrface of the raised portion of the transverse frame member 13. Formed integral with that portion of the body7 16 of each journal box that projects beyond the U- shaped bearing 11 are laterally projecting ears 22 with the inner faces of which are formed vertically disposed lugs 23, the faces of which are convex and when the boxes are properly positioned in the bearings 11 these curved faces bear directly against the outer faces of the outer flanges of those portions of the beams 10 that are bent downwardly to form the bearings 11. (See Figs. 4 and 6.) These lugs 23 perform the functions of stops to limit the inward movement of the journal boxes with respect to4 the truck frame and likewise they serve as rocking bearings during any vertical swinging movement of the boxes while the same are alining themselves with each other and with the carried axles Formed through one of the laterally projectingears 22 is a port or passageway 24, the outer end of which is closed by a removable member 25, such as a screw plug, and this construction permits grease or liquid lubricant to be readily delivered into the chamber within the journal box and which A mine car truck frame of my improved construction is comparatively simple, may be easily and cheaply produced inasmuch as its principal parts may be constructed from ordinary commercial shapes, is very strong and durable, and the journal bearings associated with the` truck are located in the frame so that they may rock freely in all directions, thereby permitting them to aline themselves with each other and with the journaled axles.

In Figs. 7 to 9, inclusive, I have shown a modified form of frame in which it will be noted that the side frame 10a is in the form of a fiat plate or bar having U-shaped ,depressions 10b formed near its ends for receiv- -ing the ends of the cross-channels 13, as

hereinbefore described. l

In all'forms of myinvention, it will be noted that the side frame members 1010a and the cross-members 13 are on thesame horizontal planeso that the floor or deck timbers arranged thereon must be notched outabove the upwardly bent portions 15 at the ends of the cross members. By having is occupied by the'anti-friction members 18..4

the central portions of the cross-members 13 depressed, it is possible to mount the journal boxes in the raised portions at the ends thereof without increasing the floor height of the car over that which is usual where wheelswith plain bearings are employed.

within the U-shape'd portions of said side\ members and` beneath the end portions of said transverse members.

2. A. mine car truck frame comprising a pair of side members, portions adjacent to the ends thereof being substantially U-shape, transverse members having their end portions seated in the U-shaped portions of the' side members, journal boxes positioned within the U-shaped portions of said side members and beneath the end portions of said transverse members, and frame engaging members formed on said journal boxes.

3. A mine car truck frame comprising a pau` of side members, portions adjacent to transverse members having their end porthe ends thereof being substantially U-shape,

tions seated in the U-shaped portions of the y side members, andjournal boxes arranged for universal rocking movement within the -U-shaped portions of said side members and beneath the end portions of said transverse members..

4. A mine car truck frame comprising a pair of side members, portions adjacent to the ends of which are bent to form substantially U-shaped bearings, transverse frame members having their ends positioned inthe upper portions of said U-shaped bearings, and journal boxes loosely arranged ,within said U-shaped bearings.

5. Amine car truck frame'comprising a pair of side members, portions adjacent to the ends of which are bent-to form substantially U-shaped bearings, transverse frame members having their ends positioned in the upper portions of said U-sha ed bearings, and journal boxes mounted or universal rocking movement within said Ufshaped bearings and having parts that engage with said U-shaped bearings and with the end portions of the transverse members.

6. A mine car truck frame comprisinga pair of side members, portions adjacent to.

the ends of which are bent to form substantially U-shaped bearings, transverse frame members having their ends ositionedin the upper portions of said U-Ili ing movement within said U-shaped bearings and having parts that engage with said U-shaped bearings and with the end portions ape'd bearings, ournal boxesl mounted for unlversal rock-l of the transverse members, and lu projecting laterally from the'outer portlons of the journal boxes and adapted to bear against the outer faces of the U-shaped bearings.y

7. The combination with a mine car truck frame having side members in which are formed U-shaped bearings, of journal boxes mounted for rocking movement in said U- shaped bearings, and lugs projecting-laterally from the outer portions of said journal boxes, which lugs are adapted to bear against the outer faces of said U-shaped bearings.

8. rlhe combination with a mine car truck frame having side members in which are formed U-shaped bearings, of journal boxes mounted for rocking movement in said U- shaped bearings, lugs projecting laterally from the outer portions of said journal boxes, which lugs are adapted to bear against the outer faces of said U-shaped bearings, and wheel carrying axles journaled in said journal boxes.

9. The combination with a mine car truck iframe havingside members in which are formed U-shaped bearings, of journal boxes mounted for rocking movement in said U- shaped bearings, lugs projecting laterally form the outer portions of said journal boxes, which lugs are adapted to bear against the outer lfaces of said U-shaped bearings, and there being a lubricant openjong formed in one of the lugs on each journal 10. A mine car truck frame comprisin frame members having depressed centra portions for supporting the ooring of the car.

11. A. mine car truck frame member having raised or elevated endportions in which journal boxes may be secured.

12. A mine car frame consisting of connected members lying in the sa me horizontal plane and constitutin afloor support, certain of said members aving raised portions in which journal boxes may be secured.

13. A mine car truck frame comprising side members depressed at their ends to ac- .':fmodate journal boxes, and cross mema frame member having a raised portion to accommodate said journal box and having a loor supporting surface below the top sur- L face of said journal box. l

16. In a mine car truck frame, a transverse member consistingr of a structural channel, the web of which is disposed horizontally andis provided with upwardly extending depressions at its opposite ends, each adapted to receive a journal box.

17. In a mine cartruck frame, a side member consisting of a structural channel which is bent downwardl and then upwardly near each end to orm a U-shaped journal box containing member.

18. In a mine car, longitudinal and transverse members secured to each other and at their securing points being respectively recessed in opposite directions to receive a journal box between them.

19. In a mine car truck frame, parallel side members consisting of structural channels, the webs of which are disposed horizontally with their flanges facing downwardly and which channels are bent near their ends to form U-shaped journal box containing recesses, and transverse members consisting of structural channels, the webs of which are disposed horizontally with their flanges facing downwardly and which channels t near their ends between the sides of said recesses, the flanges of said transverse 

